Electrochemical separation of magnesium from solutions of magnesium and lithium chloride

Pan, Xijuan; Zhang, Dou; Meng, Deliang; Han, Xiuxiu; Zhang, Ting‐an

doi:10.1016/j.hydromet.2019.105166

Cited by 22 publications

(9 citation statements)

References 20 publications

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“…The anode plate is a titanium plate whose surface is covered with RuO 2 and TiO 2 , and the cathode material is a titanium plate [22], which is separated by a layer of PTFE film placed between the cathode and anode tanks.…”

Section: Methodsmentioning

confidence: 99%

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders

Guo¹,

Li²,

Deng³

et al. 2022

Mater. Res. Express

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In this paper, Mg(OH)2 was prepared by the diaphragm electrolysis method using bischofite (MgCl2·6H2O). The influence of electrolysis process conditions such as current density, electrolysis temperature and electrolyte concentration on powder particle size is discussed. The electrolytic product Mg(OH)2 powder was characterized by laser particle size analysis, XRD, SEM, BET, XRF, and DSC-TGA. The results show that the particle size of Mg(OH)2 powder first increases and then decreases with increasing current density and reaches a maximum D50 value of 20.1 μm at a current density of 0.04 A/cm2. The Mg(OH)2 powder particle size first decreases, then increases and then decreases with increasing electrolysis temperature, at an electrolysis temperature of 60 ℃ and 70 ℃, the particle size reaches a maximum D50 value of 23.8 μm and a minimum D50 value of 7.7 μm, respectively. The Mg(OH)2 powder particle size first increases and then decreases with increasing electrolyte concentration and reaches a maximum D50 value of 22.3 μm at an electrolyte concentration of 0.7 mol/L. The Mg(OH)2 powder prepared at a current density of 0.3 A/cm2, electrolyte concentration of 0.3 mol/L and an electrolysis temperature of 30 ℃ shows an average particle size of 13.8 μm, a purity higher than 98.66%, and a sheet-like structure. The surface area is 58 m2/g. The Mg(OH)2 powder can be decomposed at 300 ℃-400 ℃ and calcined at 400 ℃ for 2 h, through SEM and Scherrer formula calculation, the calcined product is nano-MgO powder with good crystallinity.

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Section: Methodsmentioning

confidence: 99%

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders

Guo¹,

Li²,

Deng³

et al. 2022

Mater. Res. Express

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“…Electrodialysis and membrane methods are two new environmental separation technologies that have been rapidly developed and used for lithium extraction from brines [123][124][125]. Zhao et al [99] and Liu et al [126] proposed an improved solution: a sandwiched liquid membrane electrodialysis system comprising two cation exchange membranes and one Li-loaded organic liquid membrane. This system achieved identification and fast electromigration of Li + assisted by an electric field, indicating the Mg/Li mass ratio in brines could be reduced from 100 to below 2 under optimal conditions.…”

Section: Electrodialysis and Membrane Methodsmentioning

confidence: 99%

“…However, the process flow is complicated and variable because of their complex composition containing various elements such as Mg, Na, K, Ca, and B. In particular, the presence of Mg impurity significantly affects the extraction of lithium [98][99]. The mass ratio of Mg/Li has always been an important indicator for evaluating the feasibility of lithium extraction from salt lakes.…”

Section: Extraction Of Lithium From Brinesmentioning

confidence: 99%

A review of lithium extraction from natural resources

Liu

Lü

et al. 2022

Int J Miner Metall Mater

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Lithium is considered to be the most important energy metal of the 21st century. Because of the development trend of global electrification, the consumption of lithium has increased significantly over the last decade, and it is foreseeable that its demand will continue to increase for a long time. Limited by the total amount of lithium on the market, lithium extraction from natural resources is still the first choice for the rapid development of emerging industries. This paper reviews the recent technological developments in the extraction of lithium from natural resources. Existing methods are summarized by the main resources, such as spodumene, lepidolite, and brine. The advantages and disadvantages of each method are compared. Finally, reasonable suggestions are proposed for the development of lithium extraction from natural resources based on the understanding of existing methods. This review provides a reference for the research, development, optimization, and industrial application of future processes.

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“…diffusion at the interface of the electrode brine and electrode material nanopores are also very different, which directly affect the lithium extraction rate. It is still remains difficult to achieve large-scale production and preparation of high-efficiency lithium electrode materials, as well as the assembly of electrolytic cells in large-scale lithium extraction operations [264]. To resolve these limitations, considerable work is still required to realize industrial applications, including electrode materials, electrochemical cell equipment, and extraction process.…”

Section: Lithium Manganese Oxide (Lmo) Battery Systemmentioning

confidence: 99%

Materials for lithium recovery from salt lake brine

et al. 2020

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Rapid developments in the electric industry have promoted an increasing demand for lithium resources. Lithium in salt lake brines has emerged as the main source for industrial lithium extraction, owing to its low cost and extensive reserves. The effective separation of Mg 2? and Li ? is critical to achieving high recovery efficiency and purity of the final lithium product. This paper summarizes Mg 2? /Li ? separation materials and methods in the field of lithium recovery from salt lake brines. The review begins with an introduction to the global distribution and demand for lithium resources, followed by a description of the materials used in various separation techniques, including precipitation, adsorption, solvent extraction, nanofiltration membrane, electrodialysis, and electrochemical methods. A comparison, analysis, and outlook of such methods are comprehensively discussed in terms of principles, mechanisms, synthesis/operation, development, and industrial applications. We conclude with a presentation of challenges and insights into the future directions of lithium extraction from salt lake brines. A combination of the advantages of various materials is the most logical step toward developing novel methods for extracting lithium from brines with high separation selectivity, stability, low cost, and environmentally friendly characteristics.

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Electrochemical separation of magnesium from solutions of magnesium and lithium chloride

Cited by 22 publications

References 20 publications

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders

A review of lithium extraction from natural resources

Materials for lithium recovery from salt lake brine

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Electrochemical separation of magnesium from solutions of magnesium and lithium chloride

Cited by 22 publications

References 20 publications

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)2 powders

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)2 powders

A review of lithium extraction from natural resources

Materials for lithium recovery from salt lake brine

Contact Info

Product

Resources

About

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders